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The nuclear magnetic moment of ²⁰⁸Bi and its relevance for a test of bound-state strong-field QED

Schmidt, Stefan ; Billowes, Jonathan ; Bissell, Mark L. ; Blaum, Klaus ; Garcia Ruiz, Ronald Fernando ; Heylen, Hanne ; Malbrunot-Ettenauer, S. ; Neyens, Gerda ; Nörtershäuser, Wilfried ; Plunien, G. ; Sailer, S. ; Shabaev, Vladimir M. ; Skripnikov, Leonid V. ; Tupitsyn, Ilya I. ; Volotka, Andrey V. ; Yang, Xiaofei (2022):
The nuclear magnetic moment of ²⁰⁸Bi and its relevance for a test of bound-state strong-field QED. (Publisher's Version)
In: Physics Letters B, 779, pp. 324-330. Elsevier, ISSN 0031-9163, e-ISSN 1873-2445,
DOI: 10.26083/tuprints-00012663,
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Item Type: Article
Origin: Secondary publication
Status: Publisher's Version
Title: The nuclear magnetic moment of ²⁰⁸Bi and its relevance for a test of bound-state strong-field QED
Language: English
Abstract:

The hyperfine structure splitting in the 6p2 4S3/2 -> 6p27s 4P1/2 transition at 307 nm in atomic 208Bi was measured with collinear laser spectroscopy at ISOLDE, CERN. The hyperfine A and B factors of both states were determined with an order of magnitude improved accuracy. Based on these measurements, theoretical input for the hyperfine structure anomaly, and results from hyperfine measurements on hydrogen-like and lithium-like 209Bi80+,82+, the nuclear magnetic moment of 208Bi has been determined to μ(208Bi) =+4.570(10) μN . Using this value, the transition energy of the ground-state hyperfine splitting in hydrogen-like and lithium-like 208Bi80+,82+ and their specific difference of −67.491(5)(148) meV are predicted. This provides a means for an experimental confirmation of the cancellation of nuclear structure effects in the specific difference in order to exclude such contributions as the cause of the hyperfine puzzle, the recently reported 7-σ discrepancy between experiment and bound-state strong-field QED calculations of the specific difference in the hyperfine structure splitting of 209Bi80+,82+.

Journal or Publication Title: Physics Letters B
Journal volume: 779
Publisher: Elsevier
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 02 Mar 2022 09:45
Last Modified: 10 Mar 2022 09:41
DOI: 10.26083/tuprints-00012663
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-126634
Additional Information:

Keywords: Nuclear magnetic moment; Bismuth; Hyperfine anomaly; Specific difference; Quantum electrodynamics; Laser spectroscopy

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/12663
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